Definitions for opisthobranchəˈpɪs θəˌbræŋk; əˌpɪs θəˈbræŋ ki ɪt, -ˌeɪt
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Random House Webster's College Dictionary
o•pis•tho•branchəˈpɪs θəˌbræŋk; əˌpɪs θəˈbræŋ ki ɪt, -ˌeɪt(n.)
also o•pis•tho•bran•chi•ate
any gastropod mollusk of the order Opisthobranchia, characterized by a small or absent mantle and shell and by two pairs of tentacles: includes the sea slugs and pteropods.
Category: Invertebrates
Origin of opisthobranch:
1850–55; < NL Opisthobranchia; see opistho -, branchia
Wiktionary
opisthobranch(Noun)
Any of a large and diverse group of specialized complex marine gastropods previously united under Opisthobranchia within the Heterobranchia, characterized by two pairs of tentacles and a single gill behind and to the right of the heart.
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